一、~~~ the + ~ est + 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc)
  ~~~ the most + 形容词 + 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc)
  例句:Helen is the most beautiful girl that I have ever seen.
  二、Nothing is + ~~~ er than to + V Nothing is + more + 形容词 + than to + V
  例句:Nothing is more important than to receive education.
  三、~~~ cannot emphasize the importance of ~~~ too much.(再怎么强调…的重要性也不为过。)
  例句:We cannot emphasize the importance of protecting our eyes too much.
  四、There is no denying that + S + V …(不可否认的…)
  例句:There is no denying that the qualities of our living have gone from bad to worse.
  五、It is universally acknowledged that + 句子~~ (全世界都知道…)
  例句:It is universally acknowledged that trees are indispensable to us.
  六、There is no doubt that + 句子~~ (毫无疑问的…)
  例句:There is no doubt that our educational system leaves something to be desired.
  七、An advantage of ~~~ is that + 句子 (…的优点是…)
  例句:An advantage of using the solar energy is that it won”t create (produce) any pollution.
  八、The reason why + 句子 ~~~ is that + 句子 (…的原因是…)
  例句:The reason why we have to grow trees is that they can provide us with fresh air./ The reason why we have to
  grow trees is that they can supply fresh air for us.
  九、So + 形容词 + be + 主词 + that + 句子 (如此…以致于…)
  例句:So precious is time that we can”t afford to waste it.
  十、Adj + as + Subject(主词)+ be, S + V~~~ (虽然…)
  例句:Rich as our country is, the qualities of our living are by no means satisfactory. {by no means = in no way = on no account 一点也不}
  十一、On no account can we  + V ~~~ (我们绝对不能…)
  例句:On no account can we ignore the value of knowledge.
  十二、It is time + S + 过去式 (该是…的时候了)
  例句:It is time the authorities concerned took proper steps to solve the traffic problems.
  十三、There is no one but ~~~ (没有人不…)
  例句:There is no one but longs to go to college.
  十四、be + forced/compelled/obliged + to + V (不得不…)
  例句:Since the examination is around the corner, I am compelled to give up doing sports.
  十五、It pays to + V ~~~ (…是值得的。)
  例句:It pays to help others.
  十六、Spare no effort to + V (不遗余力的)
  例句:We should spare no effort to beautify our environment.
  好句~~